Gockele, Annette; Guderle, Marcus; Bachmann, Dörte; Weigelt, Alexandra; Gessler, Arthur; Scherer-Lorenzen, Michael (2017): Root traits (biomass, length, root length density, diameter, surface area, volume, tips, forks and crossings) in the Jena-Ecotron experiment [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.877643, In supplement to: Guderle, Marcus; Bachmann, Dörte; Milcu, Alexandru; Gockele, Annette; Bechmann, Marcel; Fischer, Christine; Roscher, Christiane; Landais, Damien; Ravel, Olivier; Devidal, Sébastien; Roy, Jacques; Gessler, Arthur; Buchmann, Nina; Weigelt, Alexandra; Hildebrandt, Anke (2017): Dynamic niche partitioning in root water uptake facilitates efficient water use in more diverse grassland plant communities. Functional Ecology, https://doi.org/10.1111/1365-2435.12948
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Abstract:
This dataset contains root traits (biomass, length, diameter, surface area, tips, forks and crossings) in the Jena-Ecotron Experiment in 2012. This experiment was conducted in the Montpellier European Ecotron (CNRS, France), an advanced controlled environment facility for ecosystem research, and aimed at understanding the impact of plant species richness (4 vs. 16 species) for ecosystem carbon and water fluxes.
The soil monoliths used in this experiment contained plant communities originating from the long- term Jena Experiment (50°57.1' N, 11°37.5' E, 130 m above sea level; mean annual temperature 9.3°C, mean annual precipitation 587 mm) established in May 2002. Twelve plots were selected for the Jena-Ecotron study according to the following criteria: (1) the four functional groups grasses, legumes, small and tall herbs were present, (2) realized species numbers were close to sown species richness, and (3) plots were equally distributed across the experimental field site to account for different soil textures. Large monoliths (2 m² surface area, diameter of 1.6 m, 2 m depth with a weight of 7 to 8 tons) including intact soil and vegetation were excavated in December 2011 and placed in lysimeters. In March 2012, before the start of the vegetation growth, the lysimeters were transported and installed in the Macrocosms platform of the Montpellier European Ecotron.
Three soil cores (diameter 3.5 cm) were sampled to 60 cm depth in each plot. Each core was divided into six layers (0-5, 5-10, 10-20, 20-30, 30-40 and 40-60 cm). The respective layers were pooled per plot, and washed with tap water over a sieve (mesh size 200 µm) to separate roots from soil. Cleaned roots were weighed and a subsample of the fresh roots (approx. 2 g) was stored in 70 % ethanol before it was dyed (with neutral red solution) and scanned (Scanner Optical STD4800 Regent Instruments Inc. with top light unit and an image resolution of 600 dpi). Root length density and root surface area were estimated with WinRhizo (Reg 2009c, Regents Instruments Inc.). The smooth off area of WinRhizo was set to 0.0001 and the length-width ratio to 3.0. Belowground biomass was estimated as described above but the samples were then dried at 65°C for three days.
Related to:
Milcu, Alexandru; Eugster, Werner; Bachmann, Dörte; Guderle, Marcus; Roscher, Christiane; Gockele, Annette; Landais, Damien; Ravel, Olivier; Gessler, Arthur; Lange, Markus; Ebeling, Anne; Weisser, Wolfgang W; Roy, Jacques; Hildebrandt, Anke; Buchmann, Nina (2016): Plant functional diversity increases grassland productivity-related water vapor fluxes: an Ecotron and modeling approach. Ecology, 97(8), 2044-2054, https://doi.org/10.1890/15-1110.1
Milcu, Alexandru; Roscher, Christiane; Gessler, Arthur; Bachmann, Dörte; Gockele, Annette; Guderle, Marcus; Landais, Damien; Piel, Clement; Escpape, Christophe; Devidal, Sébastien; Ravel, Olivier; Buchmann, Nina; Gleixner, Gerd; Hildebrandt, Anke; Roy, Jacques (2014): Functional diversity of leaf nitrogen concentrations drives grassland carbon fluxes. Ecology Letters, 17(4), 435-444, https://doi.org/10.1111/ele.12243
Further details:
Project(s):
The Jena Experiment (JenExp)
Coverage:
Latitude: 50.946100 * Longitude: 11.611300
Date/Time Start: 2012-01-01T00:00:00 * Date/Time End: 2012-12-31T00:00:00
Minimum DEPTH, soil: -0.500 m * Maximum DEPTH, soil: -0.025 m
Event(s):
Comment:
There are two types of missing values contained in datasets from the Jena Experiment. Empty cells represent missing values that result from the design of the experiment. Empty cells result when the respective value does not occur in the design and could thus not be measured. For example, in the case of species-specific biomass cells are left blank, when the species was not sown in the respective plot. Missing values that resulted from methodological problems, sampling errors, or lost samples/data are marked with "-9999".
This dataset is part of a collection of measurements of the Jena-Ecotron Experiment, which was part of the Jena Experiment.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Experimental plot | Experimental plot | Guderle, Marcus | Detailed explanations of plots and the plant diversity gradient are provided in the section further details. | ||
| 2 | Depth, soil, minimum | Depth soil min | m | Guderle, Marcus | ||
| 3 | Depth, soil, maximum | Depth soil max | m | Guderle, Marcus | ||
| 4 | DEPTH, soil | Depth soil | m | Guderle, Marcus | Geocode | |
| 5 | Date/time start | Date/time start | Guderle, Marcus | of sampling campaign | ||
| 6 | Date/time end | Date/time end | Guderle, Marcus | of sampling campaign | ||
| 7 | Treatment: mowing | T:mow | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 8 | Treatment: weeding | T:weed | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 9 | Treatment: weeding history | T:weed hist | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 10 | Treatment: seed addition | T:seed add | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 11 | Treatment: fertilizing | T:fert | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 12 | Treatment: drought | T:drought | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 13 | Treatment: aboveground: pesticide | T:abovegr pest | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 14 | Treatment: below pesticide | T:below pest | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 15 | Treatment: molluscide | T:mollus | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 16 | Treatment: nematicide | T:nema | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 17 | Treatment: eartworm exclosure | T:eartworm excl | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 18 | Treatment: phytometers | T:phyto | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 19 | Treatment: special | T:special | Guderle, Marcus | Detailed explanations of treatments are provided in the section further details. | ||
| 20 | Root, biomass belowground | Root biom belowgr | mg/cm3 | Guderle, Marcus | Measured on plot level | |
| 21 | Root, specific length | Root l spec | m/g | Guderle, Marcus | Measured on plot level | |
| 22 | Root, length per volume soil | Root l per vol s | cm/cm3 | Guderle, Marcus | Measured on plot level | |
| 23 | Root diameter, average | Root diam avg | mm | Guderle, Marcus | Measured on plot level | |
| 24 | Root, surface area per volume soil | Root SA per vol s | cm2/cm3 | Guderle, Marcus | Measured on plot level | |
| 25 | Root, volume per volume soil | Root vol per vol s | cm3/cm3 | Guderle, Marcus | Measured on plot level | |
| 26 | Root trait of tips | Root trait tips | 1/cm | Guderle, Marcus | Measured on plot level | |
| 27 | Root trait of forks | Root trait forks | 1/cm | Guderle, Marcus | Measured on plot level | |
| 28 | Root trait of crossings | Root trait cross | 1/cm | Guderle, Marcus | Measured on plot level |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1944 data points